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单词
bottom hold-down
释义
bottom hold-down
bottom hold-down
[
′bäd·əm ′hōl dau̇n
]
(petroleum engineering)
A device located at the lower end of a bottom-hole pump that anchors it in a well.
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edpitaf
edpj
edpjc
edpk
edpl
edpm
edpma
edpms
edpn
edpo
edpp
edppops
edppp
edpq
e-dpr
edpr
edp-rc
edprp
edprv
edps
edpsa
edpsd
edpt
close-packed crystal
close-packedly
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更新时间:2026/4/15 8:53:49